Consider a one dimensional plane wall with a thickness 2L. The surface at x = – L is subjected to convective conditions characterized by T[infinity],1, h1, while the surface at x = + L is subjected to conditions T[infinity],2, h2. The initial temperature of the wall is To = (T[infinity],1 + T[infinity],2)/2 where T[infinity],1 > T[infinity],2. Write the differential equation and identify the boundary and initial conditions that could be used to determine the temperature distribution T(x, t) as a function of position and time.